The DSC1101AI2-080.0000 is a MEMS-based XO (Standard) that delivers a clean 80 MHz CMOS clock from a 2.25V to 3.6V rail — it runs happily on a 2.5V or 3.3V supply without a separate regulator.
The 95 µA disable current is low enough that a coin cell can keep the oscillator in standby for months without draining the battery.
Housed in a 7.00 mm x 5.00 mm 6-SMD no-lead package with a seated height of just 0.90 mm — it sits low on the board, which helps in compact or multi-board stacks. The 6-pin no-lead footprint is straightforward to route; the exposed pad underneath provides a solid thermal and ground connection.